<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Reflection
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Parameter.php 18951 2009-11-12 16:26:19Z alexander $
 */

/**
 * @category   Zend
 * @package    Zend_Reflection
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Reflection_Parameter extends ReflectionParameter
{
	/**
	 * @var bool
	 */
	protected $_isFromMethod = false;

	/**
	 * Get declaring class reflection object
	 *
	 * @param  string $reflectionClass Reflection class to use
	 * @return Zend_Reflection_Class
	 */
	public function getDeclaringClass($reflectionClass = 'Zend_Reflection_Class')
	{
		$phpReflection  = parent::getDeclaringClass();
		$zendReflection = new $reflectionClass($phpReflection->getName());
		if (!$zendReflection instanceof Zend_Reflection_Class) {
			require_once 'Zend/Reflection/Exception.php';
			throw new Zend_Reflection_Exception('Invalid reflection class provided; must extend Zend_Reflection_Class');
		}
		unset($phpReflection);
		return $zendReflection;
	}

	/**
	 * Get class reflection object
	 *
	 * @param  string $reflectionClass Reflection class to use
	 * @return Zend_Reflection_Class
	 */
	public function getClass($reflectionClass = 'Zend_Reflection_Class')
	{
		$phpReflection  = parent::getClass();
		if($phpReflection == null) {
			return null;
		}

		$zendReflection = new $reflectionClass($phpReflection->getName());
		if (!$zendReflection instanceof Zend_Reflection_Class) {
			require_once 'Zend/Reflection/Exception.php';
			throw new Zend_Reflection_Exception('Invalid reflection class provided; must extend Zend_Reflection_Class');
		}
		unset($phpReflection);
		return $zendReflection;
	}

	/**
	 * Get declaring function reflection object
	 *
	 * @param  string $reflectionClass Reflection class to use
	 * @return Zend_Reflection_Function|Zend_Reflection_Method
	 */
	public function getDeclaringFunction($reflectionClass = null)
	{
		$phpReflection = parent::getDeclaringFunction();
		if ($phpReflection instanceof ReflectionMethod) {
			$baseClass = 'Zend_Reflection_Method';
			if (null === $reflectionClass) {
				$reflectionClass = $baseClass;
			}
			$zendReflection = new $reflectionClass($this->getDeclaringClass()->getName(), $phpReflection->getName());
		} else {
			$baseClass = 'Zend_Reflection_Function';
			if (null === $reflectionClass) {
				$reflectionClass = $baseClass;
			}
			$zendReflection = new $reflectionClass($phpReflection->getName());
		}
		if (!$zendReflection instanceof $baseClass) {
			require_once 'Zend/Reflection/Exception.php';
			throw new Zend_Reflection_Exception('Invalid reflection class provided; must extend ' . $baseClass);
		}
		unset($phpReflection);
		return $zendReflection;
	}

	/**
	 * Get parameter type
	 *
	 * @return string
	 */
	public function getType()
	{
		if ($docblock = $this->getDeclaringFunction()->getDocblock()) {
			$params = $docblock->getTags('param');

			if (isset($params[$this->getPosition()])) {
				return $params[$this->getPosition()]->getType();
			}

		}

		return null;
	}
}
